/*---------------------------------------------------------------------------*
  Project:  NintendoWare
  File:     gfx_SceneUpdater.cpp
  
  Copyright (C)2009-2011 Nintendo/HAL Laboratory, Inc.  All rights reserved.
  
  These coded instructions, statements, and computer programs contain proprietary
  information of Nintendo and/or its licensed developers and are protected by
  national and international copyright laws. They may not be disclosed to third
  parties or copied or duplicated in any form, in whole or in part, without the
  prior written consent of Nintendo.
  
  The content herein is highly confidential and should be handled accordingly.
  
  $Revision: 31311 $
 *---------------------------------------------------------------------------*/

#include "precompiled.h"

#include <nw/gfx/gfx_SceneUpdater.h>

#include <nw/gfx/gfx_SceneUpdateHelper.h>
#include <nw/gfx/gfx_SceneContext.h>
#include <nw/gfx/gfx_SkeletalModel.h>
#include <nw/gfx/gfx_ParticleModel.h>
#include <nw/gfx/gfx_ParticleSet.h>
#include <nw/gfx/res/gfx_ResShape.h>

#include <nw/dev.h>

namespace nw
{
namespace gfx
{

NW_UT_RUNTIME_TYPEINFO_DEFINITION(SceneUpdater, ISceneUpdater);

//----------------------------------------
SceneUpdater*
SceneUpdater::Builder::Create(os::IAllocator* allocator)
{
    NW_NULL_ASSERT(allocator);
    
    if (!this->m_SkeletonUpdater)
    {
        this->m_SkeletonUpdater.Reset(SkeletonUpdater::Builder()
            .Create(allocator));
    }

    if (!this->m_WorldMatrixUpdater)
    {
        this->m_WorldMatrixUpdater.Reset(WorldMatrixUpdater::Builder()
            .Create(allocator));
    }
    
    if (!this->m_BillboardUpdater)
    {
        this->m_BillboardUpdater.Reset(BillboardUpdater::Create(allocator));
    }
    
    void* memory = allocator->Alloc(sizeof(SceneUpdater));
    NW_NULL_ASSERT(memory);
    
    return new(memory) SceneUpdater(
        allocator,
        this->m_SkeletonUpdater,
        this->m_WorldMatrixUpdater,
        this->m_BillboardUpdater);
}

//----------------------------------------
void
SceneUpdater::UpdateAll(SceneContext* sceneContext)
{
    NW_NULL_ASSERT(sceneContext);

    this->EvaluateAnim(sceneContext, anim::ResGraphicsAnimGroup::EVALUATION_BEFORE_WORLD_UPDATE);
    this->UpdateTransformNode(sceneContext);
    // TODO: 将来、描画カリングを行う場合はここで処理する
    this->EvaluateAnim(sceneContext, anim::ResGraphicsAnimGroup::EVALUATION_AFTER_SCENE_CULLING);
    this->UpdateSkeletalModel(sceneContext);
    this->UpdateAnim(sceneContext);
}

//----------------------------------------
void
SceneUpdater::SubmitView(
    RenderQueue* renderQueue,
    SceneContext* sceneContext,
    const Camera& camera,
    u8 layerId,
    RenderSortMode renderSortMode)
{
    Model::IsVisibleModelDefaultFunctor isVisibleModel;
    
    SceneUpdateHelper::SubmitView(
        this->m_SkeletonUpdater.Get(),
        this->m_BillboardUpdater.Get(),
        renderQueue,
        sceneContext,
        camera,
        layerId,
        layerId,
        renderSortMode,
        this->m_DepthSortMode,
        &isVisibleModel);
}

//----------------------------------------
void
SceneUpdater::SubmitView(
    RenderQueue* renderQueue,
    SceneContext* sceneContext,
    const Camera& camera,
    u8 layerId,
    u8 particleLayerId,
    RenderSortMode renderSortMode)
{
    Model::IsVisibleModelDefaultFunctor isVisibleModel;
    
    SceneUpdateHelper::SubmitView(
        this->m_SkeletonUpdater.Get(),
        this->m_BillboardUpdater.Get(),
        renderQueue,
        sceneContext,
        camera,
        layerId,
        particleLayerId,
        renderSortMode,
        this->m_DepthSortMode,
        &isVisibleModel);
}

//----------------------------------------
void
SceneUpdater::SubmitView(
    RenderQueue* renderQueue,
    SceneContext* sceneContext,
    const Camera& camera,
    u8 layerId,
    u8 particleLayerId,
    SceneUpdater::IsVisibleModelFunctor* isVisibleModel,
    RenderSortMode renderSortMode)
{
    SceneUpdateHelper::SubmitView(
        this->m_SkeletonUpdater.Get(),
        this->m_BillboardUpdater.Get(),
        renderQueue,
        sceneContext,
        camera,
        layerId,
        particleLayerId,
        renderSortMode,
        this->m_DepthSortMode,
        isVisibleModel);
}

//----------------------------------------
void
SceneUpdater::UpdateTransformNode(SceneContext* sceneContext) const
{
    NW_NULL_ASSERT(sceneContext);
    
    SceneNodeArray::iterator end = sceneContext->GetSceneNodesEnd();
    for (SceneNodeArray::iterator node = sceneContext->GetSceneNodesBegin(); node != end; ++node)
    {
        (*node)->PreUpdateSignal()(*node, sceneContext);

        // 親ノードからフラグを継承します。
        (*node)->InheritTraversalResults();

        (*node)->UpdateTransform(this->m_WorldMatrixUpdater.Get(), sceneContext);
    }
}

//----------------------------------------
void
SceneUpdater::UpdateSkeletalModel(SceneContext* sceneContext) const
{
    NW_NULL_ASSERT(sceneContext);
    
    SkeletalModelArray::iterator end = sceneContext->GetSkeletalModelsEnd();
    for (SkeletalModelArray::iterator model = sceneContext->GetSkeletalModelsBegin(); model != end; ++model)
    {
        // フルベイクアニメを使用する場合は処理をスキップする。
        if ((*model)->GetFullBakedAnimEnabled()) { continue; }

        Skeleton* skeleton = (*model)->GetSkeleton();

        // スケルトンが既に更新済みの場合は処理をスキップする。
        if (skeleton->IsUpdated()) { continue; }

        this->m_SkeletonUpdater->UpdateWorld(
            skeleton,
            *(this->m_WorldMatrixUpdater.Get()));

        skeleton->SetUpdated(true);
    }
}

//----------------------------------------
void
SceneUpdater::UpdateAnim(SceneContext* sceneContext) const
{
    NW_NULL_ASSERT(sceneContext);
    
    std::for_each(
        sceneContext->GetAnimatableNodesBegin(),
        sceneContext->GetAnimatableNodesEnd(),
        std::mem_fun(&SceneNode::UpdateFrame));
}

//----------------------------------------
void
SceneUpdater::EvaluateAnim(SceneContext* sceneContext, anim::ResGraphicsAnimGroup::EvaluationTiming timing) const
{
    NW_NULL_ASSERT(sceneContext);
    
    AnimatableNodeArray::iterator animatableNodesEnd = sceneContext->GetAnimatableNodesEnd();
    for (AnimatableNodeArray::iterator animNode = sceneContext->GetAnimatableNodesBegin();
        animNode != animatableNodesEnd; ++animNode)
    {
        // SceneContext::AnimNodesに格納されたノードは、AnimBindingを持っている
        (*animNode)->GetAnimBinding()->Evaluate(timing);
    }
}



} // namespace gfx
} // namespace nw